Brush



J. MORRISON.

Feb. 6, 1923.

BRUSH! FILED MR. 7. 1921.

3 SHEETSSHEET l Feb; 6, 1923.

J. MORRISON.

BRUSH.

FILED MAR. 1, 192i.

3 SHEETSSHEET Z.

L0 :1 A uu l l v n i JOHN JMORRISON, 01 TROY, NEW YORK.

BRUSH.

Application filed March 7, 1921.

To all whom it may GOQZGGW'I/I Be it known that 1, JOHN Monnison, a citizen of the United States, residing at Troy, in the county of liensselaer and State of New York, have invented new and useful Improvements in Brushes, of which the following is a specification.

Reference may be had to the accompanying drawings, and the reference characters marked thereon, which form a part of this specification. Similar characters refer to similar parts in the several figures therein.

This invention relates more particularly to the manufacture of brushes in which the knots of bristles are mounted upon or in a supporting pad or block which is enclosed within a casing or shell of sheet material with the bristles projecting through apertures in one wall of the casing.

Certain features of the invention relate to the manufacture of a reinforced supporting back for various toilet articles, particularly toilet brushes.

The principal objects of the invention are to facilitate and reduce the cost of manufacture and to give greater solidity to the back of the article.

@ther objects will appear in connection with the following description.

Fig. 1 of the drav-Jings is a plan View of the open side of a hollow bruslrback-shell made of sheet material.

Fig. 2 is a similar view of a cup-shaped liner also formed of sheet material adapted to be inserted within the head portion of the shell shown in Fig. 1 to reinforce the same.

Fig. 3 is a similar view of a filling-block adapted to be inserted within the handle portion of the shell shown in Fig. 1, to reinforce the same.

Fig. 4 is a similar view showing the cupshaped liner and the reinforcing block inserted within the shell of the back.

Fig. 5 is a central longitudinal section of 5 the shell of the back taken on the broken line in Fig. 1. Fig. 6 is a similar view of the cup-shapes liner taken on the broken line 66 in Fig. 2.

Fig. 7 is a similar view of the handle-reinforcing block taken on the broken line 7'? in Fig.

Fig. 8 is a similar sectional view illustrating the manner of assembling the cupshaped liner and handl -reinforcing block within the shell of the back.

Serial No. 450,222.

Fig. 9 is a similar view showing the face plate attached to the shell of the back with the brushsupporting pad enclosed within the head portion of the casing thus formed.

10 is a similar view of a broken-away portion of the handle of the brush thus formed.

.iiig. ll is a plan view of the back of the face-plate with the bristle-supporting pad mounted thereon before the face-plate is attached to the shell of the back.

12 is a side view of the same.

Fig. 13 is a plan new of a broken-away portion of the face-plate before the pad has been formed thereupon.

Fig. l l is a view in vertical longitudinal section taken on the broken line 14l14; in Fig. 11, showing the face-plate and bristle supporting pad in position in the mold whereby the parl is formed upon the face plate.

.tteferring to the d 'awings wherein the invention is shown in preferred form, 1 is the l1(::tL(1-P0ltl0ll, and 2 the handle-portion of an int ral bacleanddiandle shell adapted for i m the manufacture of a handled toilet le, such as a hair-brush, in accordance with my invention.

"lhis shel can be made of any suitable thin or sheet material, and is preferably made of sheet eelluloid molded to the desired form.

A. cup-shaped liner, 3, made of similar sheet material, preferably celluloid, is adapted to lit more or less loosely within the head portion, 1, ot the shell.

A filling block, l, is adapted to fit more or less loosely within the handle portion, 2, of the shell, the filling-block being complementary to the liner to approximately fill the shell.

The filling-block, a, may be made of wood or other material having the necessary strength and rigidity to form a substantial support or reinforce for the handle. portion of the brush.

in seating the liner, 3, and lillingdolock, et, in the shell, I first place within the shell, in plastic condition a hardenable plastic material, 15. which will flow under pressure, and t en insert within the head portion of the shell the cup-shaped filler, 3, and within the handle por 'on of the shell, the fillingblock, et, as shown in Fig. 4. I then seat the liner and filling-block within the shell by pressure applied to the exposed edge of the liner and exposed face of the filling-block by means of a presser plate, 5, applied to the open side of the shell while the back or closed side of the shell rests upon a support or table, 6.

Pressure is thus applied to the liner and the filling-block until the edge of the liner and the face of the filling-block are flush with the edge of the shell, and the parts are maintained in this position until the plastic material hardens so that the space between the shell and the liner and the filling-block is filled with the hardened plastic material.

Various kinds of hardenable plastic material may be employed for this purpose, an example being paraflin which when heated is sufiiciently plastic for the purpose and at normal temperatures is sufiiciently hard to form a solid body between the shell and the liner and the filling-block.

After the liner and filling-block have been thus seated within the shell, a faceplate, 7, is soured to the shell covering the fillingblock and the liner as shown in Fig. 9.

For certain purposes of the invention, the face-plate may be secured to the shell in any known manner; but I prefer, particularly if the shell and face-plate are made of celluloid, to secure the "face-plate to the edge oi the shell by celluloid cement.

I also prefer to secure the i'ace-plate to the edge of the liner in the same manner, and for this purpose it is desirable that the edge of the liner should be flush with the edge of the face-plate.

After the face-plate has been secured to the shell any edge portions of the face-plate which project outwardly beyond the shell are removed and the cemented joint is e1? fectively concealed by buffing.

In carrying out my invention with respect to a brush the head portion of the face-plate is formed with perforations, 8, each adapted to receive a small knot or bunch of bristles, 9, and l mount upon the race-plate a bristle-supporting pad, 10, from which the bristles, 9, project through the perforations, 8, in the face-plate.

The face-plate may be provided in any known manner with such a bristle-supporting pad mounted thereon.

In Fig. 1%, I have shown a mold apparatus adapted for forming such a bristle-supporting pad upon the face-plate. The face-plate is placed upon the lower mold member, 11, with its perforations, 8, registering with corresponding openings, 12, in the mold member, 11, and bristles are inserted through the perforations, S, into the respective openings, 12, leaving the ends of the bristles enposed above the surface oi the face-plate, 7.

Hardenable plastic material or composition, 10, is then applied to the exposed ends of the bristles around and upon which re iance it is molded by the upper mold member, 141. When the composition, 10, has: hardened sufiiciently it becomes the pad, 10.

The upper mold member, 14, is removed and the face-plate, 7, is removed from the lower mold member, 11, taking with it the pad and pad-supported bristles. The faceplate is then cemented to the shell in the manner above described with the pad enclosed and secured between the face-plate and the liner as shown in Fig. 9.

ln carrying out the invention with respect to articles other than brushes or with other kinds of brushes, the face-plate may be formed with one or more openings of a form and size adapted for the desired purpose.

It the handle tor the article is not desired, the handle portion of the shell; and face.- plate and the filling-block may be dispensed with, in which case the shell would {be formed to fit entirely around the circumference of the liner. Y

In making brushes in accordance with my invention 1 preferably make the shell or casing of celluloid or similar material containing pyroxylin, and by employing paraffin or other waX-like substance free from pyroXylin-solvent l are able to mount the liner within the back-shell in substantially solid relation thereto, thereby giving to. the combined back-shell and liner a permanent form which cannot be obtained by the usev of filling substances containing pyroxylinsolvent. at

What I claim as new and desire to secure by Letters Patent isii. A. toilet article having a black-shell containing pyroxylin, a cup-shaped liner seated within the shell, the space between the liner and shell being filled with hardened plastic material free from pyroxylinsolvent, and a face-plate secured to the shell covering the edge of the liner.

2. A toilet article having integral bacle and-handle-shell, a cup-shaped liner seated within the head portion, and a complementary filling-block separated from said liner seated within the handle portion, of the shell, the space between the shell and the liner and the filling-block being filled with hardened plastic material, and a iaceplat secured to the shell covering the filling-block and the edge of the liner. i

3.. A brush having a baelreshell containing pyroxylin, acup-shaped liner seated within the shell, the space between the liner and shell being filled with hardened plastic ma-' terial free from pyroxylin-solvent, a pertorated face-plate secured to the shell covering the liner, and a bristle-supporting bodv secured between the face-plate and the liner with bristles projecting from said bodv hrough the perforations. in the face-plate.

4;. A. brush havingan integral back-andhandle-shell, a cup-shaped liner seated within the head portion, and a separate complementary filling block seated Within the handle portion, of the shell, the space between the shell and the liner and handle-block being filled with hardened plastic material, a perforated face-plate secured to the shell covering the filling-block and liner, and a bristle-supporting body secured between the liner and the face-plate with bristles projecting from said body through the perforations in the face-plate.

5. A brush having a back-shell of sheet material containing pyroxylin, a cup-shaped liner seated within the back-shell with its edge flush with the edge of the shell, the

face-plate secured to the flush edges of the shell and liner covering the liner, and a bristle-supporting body secured between the face-plate and liner with bristles projecting from said body through the perforations in the face-plate.

6. A toilet-article having a back-shell, a cup-shaped liner seated within the shell with its edge terminating flush with the edge of the shell, the space between the liner and shell being filled with hardened plastic inatcrial, and a face-plate secured to the flush edges of the liner and shell covering the edge of the liner.

In testimony whereof, I have hereunto set my hand this 18th day of February, 1921.

JOHN MORRISON. 

